Tag Archive: Business

Apr 01

Why don’t the birds perching on high power electric lines do not get an electric shock?

Electric Eel Shock @ Rockit 06

What is an electric shock? It’s a a sudden discharge of electricity through a part of the body.

For a sudden discharge of electricity, the prime need is a potential difference. When the bird

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Permanent link to this article: http://www.plustwophysics.com/why-dont-the-birds-perching-on-high-power-electric-lines-do-not-get-an-electric-shock/

Jan 19

The Exams are near! Start Smart Preparation (Not just hard work!)

Exam are near. CBSE Exams starts from 1 March. The candidates need to be on toes to score well. Smart work is better than hardwork. Just burning midnight oil alone won’t

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Permanent link to this article: http://www.plustwophysics.com/the-exams-are-near-start-smart-preparation-not-just-hard-work/

Mar 06

Questions received via “Ask a Question” section

How to make a radio? Asked Amritansh prasad

How many time constant will be elapsed before the power delivered to the battery drops to half of its maximum value? Asked Mrityunjoy


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Permanent link to this article: http://www.plustwophysics.com/questions-received-via-ask-a-question-section/

Mar 05

How was your CBSE Class 12 Physics Exam 2013?

How was the Physics Exam today?

Were there questions beyond your comprehension?

Were there questions out of Syllabus?

Post your responses Now!

Permanent link to this article: http://www.plustwophysics.com/how-was-your-cbse-class-12-physics-exam-2013/

Feb 17

Quick Revision Study Materials for Class XII

Current Electricity
Electromagnetic Induction
AC Circuits


Ray Optics
Physical Optics
Atomic PhysicsNuclear PhysicsSemiconductor DevicesCommunication SystemReference Books in Physics Suggested by CBSE for class XI and XII students

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Permanent link to this article: http://www.plustwophysics.com/quick-revision-study-materials-for-class-xii/

Dec 18

Electrostatics – One mark and two marks questions for practice

So far we were concentrating on 3 and five marks questions only. Now I think that concentrating on one and two marks questions will further increase the chance of scoring better.

It’s true that just by concentrating on the three marks and five marks questions one can easily score greater than 60% marks. But it is not enough. When you CAN SCORE MORE why should you compromise for less?

Often the one and two marks questions are tricky and twisted. But, when the questions are tricky, there is a greater chance to score. All you need is to apply your commonsense (often complained that it is not so common!) and logical reasoning. The basic facts remain the same however the question maker twist them. So, believe that whatever question asked are based on what you have learnt. But beware!, whatever conclusions you draw must satisfy your commonsense as well as that of the examiner.

So, here are a collection of one mark and two marks questions from ELECTROSTATICS. The straight – forward questions are intentionally avoided.

Permanent link to this article: http://www.plustwophysics.com/electrostatics-one-mark-and-two-marks-questions-for-practice/

Sep 16

A Problem from Optics – Reflection of light

Convex and concave mirrors have same radii of curvature R. The distance between the mirrors is 2R. At what point on the common optical axis of the mirrors should a point source of light A be placed

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Permanent link to this article: http://www.plustwophysics.com/a-problem-from-optics-reflection-of-light/

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